let sourceData = [
  {
    product: "手机",
    region: "华东",
    sale: [120, 100, 140, 160, 180, 185, 190, 210, 230, 245, 255, 270]
  },
  {
    product: "手机",
    region: "华北",
    sale: [80, 70, 90, 110, 130, 145, 150, 160, 170, 185, 190, 200]
  },
  {
    product: "手机",
    region: "华南",
    sale: [220, 200, 240, 250, 260, 270, 280, 295, 310, 335, 355, 380]
  },
  {
    product: "笔记本",
    region: "华东",
    sale: [50, 60, 80, 110, 30, 20, 70, 30, 420, 30, 20, 20]
  },
  {
    product: "笔记本",
    region: "华北",
    sale: [30, 35, 50, 70, 20, 15, 30, 50, 710, 130, 20, 20]
  },
  {
    product: "笔记本",
    region: "华南",
    sale: [80, 120, 130, 140, 70, 75, 120, 90, 550, 120, 110, 100]
  },
  {
    product: "智能音箱",
    region: "华东",
    sale: [10, 30, 4, 5, 6, 5, 4, 5, 6, 5, 5, 25]
  },
  {
    product: "智能音箱",
    region: "华北",
    sale: [15, 50, 15, 15, 12, 11, 11, 12, 12, 14, 12, 40]
  },
  {
    product: "智能音箱",
    region: "华南",
    sale: [10, 40, 10, 6, 5, 6, 8, 6, 6, 6, 7, 26]
  }
];
let headTable = [
  "商品",
  "地区",
  "1月",
  "2月",
  "3月",
  "4月",
  "5月",
  "6月",
  "7月",
  "8月",
  "9月",
  "10月",
  "11月",
  "12月"
];
